| 摘要 |
The invention is concerned with a method to control and manage the status of a battery of a portable multimedia device equipped arranged to memorize and process digital data representing audio and video sequences and to display the video sequences on a screen. The method comprises steps of downloading an audiovisual data flow in the means of memorization; evaluating the energy available in the battery; and selecting either a first processing of the memorized data that needs only a part of the energy available in the battery, so as to conserve a pre-determined quantity of energy, or a second processing of the memorized data that needs all the available energy. The digital video data may be encoded according to the MPEG standard using the first process wherein all frames of the stored video sequence are displayed, or using the second process wherein only frames of Intra type, or a fraction of Intra frames, are displayed. Also disclosed is an apparatus for implementing the method as previously described. |
